Question

( 6 ЦЕЛЫХ 7/15 - 1,4 ) : ( 2 ЦЕЛЫХ 4/5 + 1,2)

Answer 1

$(6 \frac{7}{15} - 1 \frac{4}{10} ) \div (2 \frac{4}{5} + 1 \frac{2}{10} ) = \\ = (6 \frac{14}{30} - 1 \frac{12}{30} ) \div (2 \frac{8}{10} + 1 \frac{2}{10} ) = \\ = 5 \frac{2}{30} \div 4 = \\ = \frac{152}{30} \times \frac{1}{4} = \\ = \frac{38}{30} = 1\frac{8}{30} = \\ = 1 \frac{4}{15}$
Ответ: 1 4/15

Answer 2

Решение на фотографии

Answer 3

To solve the expression, let's first convert the mixed numbers to improper fractions and then proceed with the operations:

1. Convert mixed numbers to improper fractions:

   • 6 7/15 = (6 * 15 + 7) / 15 = 97/15
   • 2 4/5 = (2 * 5 + 4) / 5 = 14/5
   • 1.2 is equivalent to 1 2/10 = (1 * 10 + 2) / 10 = 12/10 = 6/5

2. Now the expression becomes: (97/15 - 1.4) / (14/5 + 6/5)

3. Perform the operations:

   • Subtract: 97/15 - 1.4 = 97/15 - 21/15 = (97 - 21) / 15 = 76/15
   • Add: 14/5 + 6/5 = (14 + 6) / 5 = 20/5 = 4

4. Now the expression becomes: (76/15) / 4

5. Divide: (76/15) / 4 = 76/15 * 1/4 = 76/60

6. Simplify the fraction: 76/60 = (76 ÷ 4) / (60 ÷ 4) = 19/15

So, the final answer is 19/15 or it can also be written as a mixed number as 1 4/15.